\(a,\left(4x-8\right)\left(12-y\right)=0\)
\(\Rightarrow\hept{\begin{cases}4x-8=0\\12-y=0\end{cases}}\)
\(\Rightarrow\hept{\begin{cases}4x=8\\y=12\end{cases}}\)
\(\Rightarrow\hept{\begin{cases}x=2\\y=12\end{cases}}\)
\(b,\left(2x-12\right)-14=86\)
\(\Rightarrow2\left(x-6\right)=86+14=100\)
\(\Rightarrow x-6=50\)
\(\Rightarrow x=50+6=56\)
\(c,\left(127-x\right)-17=43\)
\(\Rightarrow127-x=43+17=60\)
\(\Rightarrow x=127-60=67\)
\(\left(4x-8\right)\left(12-y\right)=0\)
\(\Leftrightarrow\orbr{\begin{cases}4x-8=0\\12-y=0\end{cases}\Leftrightarrow\orbr{\begin{cases}4x=8\\y=12-0\end{cases}\Leftrightarrow}\orbr{\begin{cases}x=2\\y=12\end{cases}}}\)
Vậy x = 2 hoặc y = 12
\(\left(2x-12\right)-14=86\)
\(\Leftrightarrow2x-12=100\)
\(\Leftrightarrow2x=112\)
\(\Leftrightarrow x=56\)
Vậy x = 56
\(\left(127-x\right)-17=43\)
\(\Leftrightarrow127-x=60\)
\(\Leftrightarrow x=127-60\)
\(\Leftrightarrow x=67\)
Vậy x = 67
\(\left(4x-8\right)\left(12-y\right)=0\)
\(\Rightarrow\orbr{\begin{cases}4x-8=0\\12-y=0\end{cases}\Rightarrow\orbr{\begin{cases}4x=0+8\\y=12-0\end{cases}}}\)
\(\Rightarrow\orbr{\begin{cases}4x=8\\y=12\end{cases}\Rightarrow\orbr{\begin{cases}x=8\div4\\y=12\end{cases}\Rightarrow}\orbr{\begin{cases}x=2\\y=12\end{cases}}}\)
Vậy x = 2 hoặc y = 12
(2x - 12) - 14 = 86
=> 2x - 12 = 86 + 14
=> 2x - 12 = 100
=> 2x = 100 + 12
=> 2x = 112
=> x = 112 : 2
=> x = 56
Vậy x = 56
(127 - x) - 17 = 43
=> 127 - x = 43 + 17
=> 127 - x = 60
=> x = 127 - 60
=> x = 67
Vậy x = 67
(4x-8)(12-y)=0
=> Trường hợp 1 :4x-8=0=>4x=0+8=>4x=8=>x=8:4=>x=2
=> Trường họp 2 :12-y=0=>y=12-0=>y=12
=>x=2 hoặc y=12
(2x-12)-14=86
=>2x+12=86+14
=>2x+12=100
=>2x=100-12=88
=>x=88:2
=>x=44
(127-x)-17=43
=>127-x==43+17=60
=>x=127-60
=>x=67
cho mk nha
\(\left(4x-8\right)\left(12-y\right)=0\)
\(\Rightarrow4x-8=0\)hoặc \(12-y=0\)
\(\Rightarrow4x=8\) \(y=12-0\)
\(\Rightarrow x=8:4\) \(y=12\)
\(\Rightarrow x=2\)
Vậy \(x=2;y=12\)
\(\left(2x-12\right)-14=86\)
\(2x-12=86+14\)
\(2x-12=100\)
\(2x=100+12\)
\(2x=112\)
\(x=112:2\)
\(x=56\)
Vậy \(x=56\)
\(\left(127-x\right)-17=43\)
\(127-x=43+17\)
\(127-x=60\)
\(x=127-60\)
\(x=67\)
Vậy \(x=67\)
